Fixed bug in flank detection.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/rtl/external_avalanche_entropy.v b/src/rtl/external_avalanche_entropy.v
index 760973b..0916f7c 100644
--- a/src/rtl/external_avalanche_entropy.v
+++ b/src/rtl/external_avalanche_entropy.v
@@ -140,7 +140,7 @@ module external_avalanche_entropy(
       entropy_we  = 1'b0;
 
       // Update the entropy shift register every positive flank.
-      if ((flank0_reg) && (flank1_reg))
+      if ((flank0_reg) && (!flank1_reg))
         begin
           entropy_new = {entropy_reg[30 : 0], cycle_ctr_reg[0]};
           entropy_we  = 1'b1;